/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:45:53,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:45:53,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:45:53,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:45:53,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:45:53,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:45:53,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:45:53,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:45:53,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:45:53,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:45:53,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:45:53,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:45:53,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:45:53,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:45:53,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:45:53,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:45:53,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:45:53,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:45:53,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:45:53,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:45:53,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:45:53,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:45:53,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:45:53,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:45:53,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:45:53,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:45:53,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:45:53,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:45:53,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:45:53,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:45:53,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:45:53,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:45:53,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:45:53,922 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:45:53,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:45:53,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:45:53,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:45:53,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:45:53,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:45:53,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:45:53,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:45:53,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:45:53,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:45:53,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:45:53,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:45:53,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:45:53,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:45:53,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:45:53,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:45:53,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:45:53,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:45:53,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:45:53,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:45:53,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:45:53,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:45:53,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:45:53,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:45:53,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:45:53,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:45:54,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:45:54,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:45:54,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:45:54,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:45:54,260 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:45:54,261 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o3.c [2020-08-19 02:45:54,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a527ef79/9a342cfb24414bb3b1d7f204c950ffd9/FLAG35cee0780 [2020-08-19 02:45:54,800 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:45:54,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o3.c [2020-08-19 02:45:54,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a527ef79/9a342cfb24414bb3b1d7f204c950ffd9/FLAG35cee0780 [2020-08-19 02:45:55,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a527ef79/9a342cfb24414bb3b1d7f204c950ffd9 [2020-08-19 02:45:55,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:45:55,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:45:55,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:45:55,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:45:55,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:45:55,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:45:55" (1/1) ... [2020-08-19 02:45:55,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2748618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55, skipping insertion in model container [2020-08-19 02:45:55,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:45:55" (1/1) ... [2020-08-19 02:45:55,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:45:55,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:45:55,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:45:55,377 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:45:55,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:45:55,401 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:45:55,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55 WrapperNode [2020-08-19 02:45:55,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:45:55,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:45:55,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:45:55,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:45:55,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55" (1/1) ... [2020-08-19 02:45:55,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55" (1/1) ... [2020-08-19 02:45:55,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55" (1/1) ... [2020-08-19 02:45:55,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55" (1/1) ... [2020-08-19 02:45:55,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55" (1/1) ... [2020-08-19 02:45:55,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55" (1/1) ... [2020-08-19 02:45:55,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55" (1/1) ... [2020-08-19 02:45:55,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:45:55,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:45:55,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:45:55,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:45:55,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:45:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:45:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:45:55,579 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-19 02:45:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:45:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 02:45:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:45:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-19 02:45:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:45:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:45:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:45:55,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:45:55,747 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 02:45:55,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:45:55 BoogieIcfgContainer [2020-08-19 02:45:55,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:45:55,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:45:55,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:45:55,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:45:55,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:45:55" (1/3) ... [2020-08-19 02:45:55,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d98cb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:45:55, skipping insertion in model container [2020-08-19 02:45:55,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:45:55" (2/3) ... [2020-08-19 02:45:55,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d98cb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:45:55, skipping insertion in model container [2020-08-19 02:45:55,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:45:55" (3/3) ... [2020-08-19 02:45:55,759 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o3.c [2020-08-19 02:45:55,768 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:45:55,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:45:55,790 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:45:55,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:45:55,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:45:55,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:45:55,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:45:55,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:45:55,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:45:55,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:45:55,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:45:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-19 02:45:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 02:45:55,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:45:55,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:45:55,845 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:45:55,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:45:55,852 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2020-08-19 02:45:55,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:45:55,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100876864] [2020-08-19 02:45:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:45:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,193 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-08-19 02:45:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:45:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:45:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:45:56,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100876864] [2020-08-19 02:45:56,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:45:56,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:45:56,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142023142] [2020-08-19 02:45:56,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:45:56,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:45:56,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:45:56,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:45:56,385 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-08-19 02:45:56,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:45:56,439 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-08-19 02:45:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:45:56,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 02:45:56,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:45:56,453 INFO L225 Difference]: With dead ends: 32 [2020-08-19 02:45:56,453 INFO L226 Difference]: Without dead ends: 18 [2020-08-19 02:45:56,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:45:56,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-19 02:45:56,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-19 02:45:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-19 02:45:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-08-19 02:45:56,498 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-08-19 02:45:56,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:45:56,499 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-08-19 02:45:56,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:45:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-08-19 02:45:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:45:56,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:45:56,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:45:56,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:45:56,502 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:45:56,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:45:56,502 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2020-08-19 02:45:56,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:45:56,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133408565] [2020-08-19 02:45:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:45:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:45:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:45:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:45:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 02:45:56,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133408565] [2020-08-19 02:45:56,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:45:56,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 02:45:56,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898813133] [2020-08-19 02:45:56,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:45:56,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:45:56,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:45:56,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:45:56,702 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 7 states. [2020-08-19 02:45:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:45:56,736 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-08-19 02:45:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:45:56,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-08-19 02:45:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:45:56,739 INFO L225 Difference]: With dead ends: 25 [2020-08-19 02:45:56,739 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 02:45:56,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:45:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 02:45:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-19 02:45:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 02:45:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-08-19 02:45:56,748 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-08-19 02:45:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:45:56,748 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-08-19 02:45:56,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:45:56,749 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-08-19 02:45:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 02:45:56,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:45:56,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:45:56,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:45:56,751 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:45:56,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:45:56,752 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2020-08-19 02:45:56,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:45:56,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630459262] [2020-08-19 02:45:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:45:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:45:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:45:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:45:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:45:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:45:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 02:45:56,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630459262] [2020-08-19 02:45:56,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:45:56,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:45:56,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3099554] [2020-08-19 02:45:56,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:45:56,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:45:56,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:45:56,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:45:56,969 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2020-08-19 02:45:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:45:57,012 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-08-19 02:45:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:45:57,013 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-08-19 02:45:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:45:57,014 INFO L225 Difference]: With dead ends: 28 [2020-08-19 02:45:57,014 INFO L226 Difference]: Without dead ends: 24 [2020-08-19 02:45:57,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:45:57,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-19 02:45:57,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-19 02:45:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 02:45:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-19 02:45:57,022 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-08-19 02:45:57,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:45:57,023 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-19 02:45:57,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:45:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-19 02:45:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 02:45:57,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:45:57,025 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:45:57,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:45:57,025 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:45:57,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:45:57,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2020-08-19 02:45:57,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:45:57,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061063899] [2020-08-19 02:45:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:45:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:45:57,048 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:45:57,049 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:45:57,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:45:57,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:45:57 BoogieIcfgContainer [2020-08-19 02:45:57,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:45:57,076 INFO L168 Benchmark]: Toolchain (without parser) took 1890.95 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 106.2 MB in the beginning and 99.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:45:57,077 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-19 02:45:57,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.35 ms. Allocated memory is still 142.6 MB. Free memory was 106.0 MB in the beginning and 96.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:45:57,079 INFO L168 Benchmark]: Boogie Preprocessor took 23.66 ms. Allocated memory is still 142.6 MB. Free memory was 96.3 MB in the beginning and 94.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:45:57,081 INFO L168 Benchmark]: RCFGBuilder took 324.09 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 94.9 MB in the beginning and 172.2 MB in the end (delta: -77.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:45:57,081 INFO L168 Benchmark]: TraceAbstraction took 1321.95 ms. Allocated memory is still 203.9 MB. Free memory was 172.2 MB in the beginning and 99.0 MB in the end (delta: 73.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:45:57,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 216.35 ms. Allocated memory is still 142.6 MB. Free memory was 106.0 MB in the beginning and 96.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.66 ms. Allocated memory is still 142.6 MB. Free memory was 96.3 MB in the beginning and 94.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.09 ms. Allocated memory was 142.6 MB in the beginning and 203.9 MB in the end (delta: 61.3 MB). Free memory was 94.9 MB in the beginning and 172.2 MB in the end (delta: -77.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1321.95 ms. Allocated memory is still 203.9 MB. Free memory was 172.2 MB in the beginning and 99.0 MB in the end (delta: 73.3 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] unsigned int input = __VERIFIER_nondet_uint(); [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] unsigned int result = id(input); [L12] COND TRUE result == 3 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 2 SDslu, 252 SDs, 0 SdLazy, 54 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 3744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 9/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...